Precooler for air conditioning unit



FIG. 1 is a perspective view taken from the top, front and left side of a precooler for air conditioning unit showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a perspective view taken from the top, front and left side of a modified form of the precooler for air conditioning unit shown in FIG. 1;

FIG. 6 is a top plan view of FIG. 5;

FIG. 7 is a bottom plan view of FIG. 5; and

FIG. 8 is a rear elevational view of FIG. 5. 

The ornamental design for a precooler for air conditioning unit, as shown and described. 